Defending Cain
type: MusicGroup
popularity: 11
followers: 1348
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x83edf861f21752c63c7d1230d1d93374db34c92c6ada81b6fece9d9811f90021
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953773
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953773
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c632ca1b-135e-402e-bf63-4bd8219f9198.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c632ca1b-135e-402e-bf63-4bd8219f9198.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c632ca1b-135e-402e-bf63-4bd8219f9198
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T10:40:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x83edf861f21752c63c7d1230d1d93374db34c92c6ada81b6fece9d9811f90021","name":"Defending Cain","registered_at":"2026-06-15T01:25:23Z","symbol":"NIM0638397","token_address":"0x70ad0de5749d78659642c75567b28b8b0acb418f","type":"artist","uuid":"c632ca1b-135e-402e-bf63-4bd8219f9198"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83edf861f21752c63c7d1230d1d93374db34c92c6ada81b6fece9d9811f90021. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c632ca1b-135e-402e-bf63-4bd8219f9198.json and https://artists.proofprofile.net/proofs/artist/c632ca1b-135e-402e-bf63-4bd8219f9198.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x83edf861f21752c63c7d1230d1d93374db34c92c6ada81b6fece9d9811f90021","name":"Defending Cain","registered_at":"2026-06-15T01:25:23Z","symbol":"NIM0638397","token_address":"0x70ad0de5749d78659642c75567b28b8b0acb418f","type":"artist","uuid":"c632ca1b-135e-402e-bf63-4bd8219f9198"}
album: Elements
  type: MusicAlbum
  date published: 2013-04-02
album: Dublove
  type: MusicAlbum
  date published: 2013-12-11
album: The Perception
  type: MusicAlbum
  date published: 2015-01-05
album: Cntrl
  type: MusicAlbum
  date published: 2017-05-17
album: Alt
  type: MusicAlbum
  date published: 2018-04-29
album: Del
  type: MusicAlbum
  date published: 2019-06-22
album: Finite
  type: MusicAlbum
  date published: 2020-10-31
album: Ghost
  type: MusicAlbum
  date published: 2021-01-01
track: Slaves to the System
track: Slaves to the System (Acoustic)

Slaves to the System
type: MusicRecording
duration: PT3M42S
duration ms: 222000
explicit: false
by artist: The Veer Union
by artist: Defending Cain
in album: Quarantine Collaborations
  type: MusicAlbum
  date published: 2021-12-17
popularity: 13
isrc code: QMGR32047868
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T10:10:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf4fa23f3a00ef318d7ddefb40474201906adce5f40b71792ece6a94788994aa8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMGR32047868
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fa23f3a00ef318d7ddefb40474201906adce5f40b71792ece6a94788994aa8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMGR32047868.
  date published: 2026-07-02T03:55:08Z
audio: Slaves to the System
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 158.878
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.405
  additional property: Energy
    type: PropertyValue
    value: 0.951
  additional property: Speechiness
    type: PropertyValue
    value: 0.354
  additional property: Acousticness
    type: PropertyValue
    value: 0.001
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.134
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.334
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.323
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Slaves to the System (Acoustic)
type: MusicRecording
duration: PT3M39S
duration ms: 219000
explicit: false
by artist: The Veer Union
by artist: Defending Cain
in album: Quarantine Collaborations
  type: MusicAlbum
  date published: 2021-12-17
popularity: 3
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2646a4aa4f3d6e70a1f2e59a989b9905c82e2c9c42fb43259695848b140920. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFD2096946.
  date published: 2026-07-30T15:42:38Z
audio: Slaves to the System (Acoustic)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.207
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.536
  additional property: Energy
    type: PropertyValue
    value: 0.733
  additional property: Speechiness
    type: PropertyValue
    value: 0.067
  additional property: Acousticness
    type: PropertyValue
    value: 0.427
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.526
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.588
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: TCAFD2096946
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960273
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFD2096946
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch